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Overview
| Topology | Flyback Converter |
| Input voltage | 90-265 V |
| Switching frequency | 100-1000 kHz |
| Output 1 | 20 V / 3 A |
Description
This design notes describes a 60 W universal input 5 V, 9 V, 12 V, 15 V and 20 V output evaluation board for laptop adapters. This featured power supply is an active-clamp flyback topology utilizing ON Semiconductor’s NCP1568 PWM controller, NCP51530 HB Driver, NCP4305 SR Controller and FDMS86202 SR FET. This design note provides complete circuit schematic, PCB, BOM and transformer information of the evaluation board. It also provide efficiency, transient response, output ripple and thermal data of the evaluation board.
Features
- Universal AC input operation (90 -265 Vac)
- High full load and average efficiency
- Low standby power
- Very low ripple and noise
- High frequency operation up to 450 kHz
- Inherent SCP and OCP protection
- Thermal and OVP protection
- Adaptive frequency operation based on AC input and output load conditions
- Adaptive ZVS operation.
- Smaller EMI components.
- Multiple probe points for evaluation
- Smooth startup operation
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Application | C | VR (V (AC)) | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Pitch (mm) | W (mm) | H (mm) | Packaging | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | Material | Interface Type | Type | Gender | Pins (pcs) | Mount | IR (mA) | Working Voltage (V (DC)) | Rows | G (mm) | IR (A) | Poles | L (mm) | Vaporphase process | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 890334023028 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTXX Film Capacitors | Across the mains | 220 nF | 310 | X2 | 300 | 0.1 | 30 GΩ | 10 | 8 | 14 | Bulk | – | – | – | – | – | – | – | – | – | – | – | Boxed THT | – | – | – | 18 | – | – | 13 | – | ||
 | 632723300011 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WR-USB Type C Connectors | USB 3.1 | – | – | – | – | – | 1000 MΩ | – | – | – | Tape and Reel | – | – | – | – | – | – | – | Type C | Horizontal | Receptacle | 24 | THR | – | 48 | – | 1.9 | 5 | – | – | – | |
 | 744314200 | SPEC | 9 files | Active i| Production is active. Expected lifetime: >10 years. | WE-HCI SMT Flat Wire High Current Inductor | – | – | – | – | – | – | – | – | 6.9 | 4.8 | – | 2 | 13.8 | 4.5 | 9 | 5.85 | 68 | Superflux | – | – | – | 2 | SMT | – | – | – | – | – | – | 7 | – | ||
 | 61300211021 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header - Single | – | – | – | – | – | – | 1000 MΩ | 2.54 | – | – | Bag | – | – | – | – | – | – | – | – | Angled | Pin Header | 2 | THT | – | 250 | Single | – | 3 | – | 5.08 | – | |
 | 61300411021 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | – | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WR-PHD Pin Header - Single | – | – | – | – | – | – | 1000 MΩ | 2.54 | – | – | Bag | – | – | – | – | – | – | – | – | Angled | Pin Header | 4 | THT | – | 250 | Single | – | 3 | – | 10.16 | – | |
 | 416131160804 | SPEC | – | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WS-DISV Small Compact SMT Flat Actuator with Top Tape 1.27 mm | – | – | 24 | – | – | – | 100 MΩ | 1.27 | – | – | Tape and Reel | – | – | – | – | – | – | – | – | – | – | 4 | – | 25 | – | – | – | – | 4 | 6.25 | Yes | |
| 750317295 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Offline Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 890334023028 | SPEC | |
| 632723300011 | SPEC | – |
| 744314200 | SPEC | |
| 61300211021 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | – |
| 61300411021 | SPEC PCN pendingDue to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff. | – |
| 416131160804 | SPEC | – |
| 750317295 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | Application | C | VR (V (AC)) | Safety Class | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Pitch (mm) | W (mm) | H (mm) | Packaging | L (µH) | IRP,40K (A) | ISAT,10% (A) | ISAT,30% (A) | RDC (mΩ) | fres (MHz) | Material | Interface Type | Type | Gender | Pins (pcs) | Mount | IR (mA) | Working Voltage (V (DC)) | Rows | G (mm) | IR (A) | Poles | L (mm) | Vaporphase process | Samples |
|---|
